feat: add ESLint flat config file (#151)

Co-authored-by: Anthony Fu <anthonyfu117@hotmail.com>

Author: lvjiaxuan

update.mjs

@@ -59,6 +59,7 @@ const linters = [
   '.commitlint*',
   '.editorconfig',
   '.eslint*',
+  'eslint*',
   '.flowconfig',
   '.jslint*',
   '.markdownlint*',